Oh gosh, don't laugh too much.

Roxy Rox, Mutt-uh, Muttles, Miss Roxy, Goof, Muttchi, Mutt-Mutt, Roxaroo, Roxaroochi, Roxanna Bofanna Poochana

Lily Poopie, Lil Poops, Turd Face, Butt Face, Lilz, Poops, Don't bite your sister ( ), Fuzznugget, Nugget